SOLUTION: Fred needs 50 ml of 15% sucrose solution to do his science experiment. He needs to mix a 10% sucrose solution with some 30% sucrose solution to get the 15% solution he wants. How

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Question 1023421: Fred needs 50 ml of 15% sucrose solution to do his science experiment. He needs to mix a 10% sucrose solution with some 30% sucrose solution to get the 15% solution he wants. How much of each should Fred use? (Include units with your numerical answers.)
fred should use ___ of 10% sucrose solution and ___ of 30% sucrose solution.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x, how much of 10%
50-x, how much of 30%

%2810x%2B30%2850-x%29%29%2F50=15-----being able to form this is what is most important.

The problem was designed to be easy and you expect x to be 25 ml and 50-x to be 25 ml.